[PATCH 3/7] mfd: mt6397: keys: use named IRQs instead of index
From: Mattijs Korpershoek <hidden>
Date: 2021-04-28 16:42:37
Also in:
linux-arm-kernel, linux-mediatek, lkml
Subsystem:
input (keyboard, mouse, joystick, touchscreen) drivers, multifunction devices (mfd), the rest · Maintainers:
Dmitry Torokhov, Lee Jones, Linus Torvalds
For some compatible pmics (such as MT6358), there are two IRQs per physical key: one for press event, another for release event. Currently, the mtk-pmic-keys driver assumes that each key only has one IRQ. The key index and the RES_IRQ resource index have a 1/1 mapping. This won't work for MT6358, as we have multiple resources (2) for one key. To prepare mtk-pmic-keys to support MT6358, retrieve IRQs by name instead of by index. Note: The keys_resources are not part of the device-tree bindings so this won't break any DT schemas. Signed-off-by: Mattijs Korpershoek <redacted> --- drivers/input/keyboard/mtk-pmic-keys.c | 7 +++++-- drivers/mfd/mt6397-core.c | 8 ++++---- 2 files changed, 9 insertions(+), 6 deletions(-)
diff --git a/drivers/input/keyboard/mtk-pmic-keys.c b/drivers/input/keyboard/mtk-pmic-keys.c
index 12c449eed026..b877bf98db38 100644
--- a/drivers/input/keyboard/mtk-pmic-keys.c
+++ b/drivers/input/keyboard/mtk-pmic-keys.c@@ -241,6 +241,7 @@ static int mtk_pmic_keys_probe(struct platform_device *pdev) unsigned int keycount; struct mt6397_chip *pmic_chip = dev_get_drvdata(pdev->dev.parent); struct device_node *node = pdev->dev.of_node, *child; + static const char *const irqnames[] = { "powerkey", "homekey" }; struct mtk_pmic_keys *keys; const struct mtk_pmic_regs *mtk_pmic_regs; struct input_dev *input_dev;
@@ -271,7 +272,8 @@ static int mtk_pmic_keys_probe(struct platform_device *pdev) input_dev->id.version = 0x0001; keycount = of_get_available_child_count(node); - if (keycount > MTK_PMIC_MAX_KEY_COUNT) { + if (keycount > MTK_PMIC_MAX_KEY_COUNT || + keycount > ARRAY_SIZE(irqnames)) { dev_err(keys->dev, "too many keys defined (%d)\n", keycount); return -EINVAL; }
@@ -279,7 +281,8 @@ static int mtk_pmic_keys_probe(struct platform_device *pdev) for_each_child_of_node(node, child) { keys->keys[index].regs = &mtk_pmic_regs->keys_regs[index]; - keys->keys[index].irq = platform_get_irq(pdev, index); + keys->keys[index].irq = + platform_get_irq_byname(pdev, irqnames[index]); if (keys->keys[index].irq < 0) { of_node_put(child); return keys->keys[index].irq;
diff --git a/drivers/mfd/mt6397-core.c b/drivers/mfd/mt6397-core.c
index 7518d74c3b4c..8738b5524783 100644
--- a/drivers/mfd/mt6397-core.c
+++ b/drivers/mfd/mt6397-core.c@@ -46,13 +46,13 @@ static const struct resource mt6397_rtc_resources[] = { }; static const struct resource mt6323_keys_resources[] = { - DEFINE_RES_IRQ(MT6323_IRQ_STATUS_PWRKEY), - DEFINE_RES_IRQ(MT6323_IRQ_STATUS_FCHRKEY), + DEFINE_RES_IRQ_NAMED(MT6323_IRQ_STATUS_PWRKEY, "powerkey"), + DEFINE_RES_IRQ_NAMED(MT6323_IRQ_STATUS_FCHRKEY, "homekey"), }; static const struct resource mt6397_keys_resources[] = { - DEFINE_RES_IRQ(MT6397_IRQ_PWRKEY), - DEFINE_RES_IRQ(MT6397_IRQ_HOMEKEY), + DEFINE_RES_IRQ_NAMED(MT6397_IRQ_PWRKEY, "powerkey"), + DEFINE_RES_IRQ_NAMED(MT6397_IRQ_HOMEKEY, "homekey"), }; static const struct resource mt6323_pwrc_resources[] = {
--
2.27.0